Vehicle seat base



FIGS. 1 and 2 are perspective views of a vehicle seat base.

FIG. 3 is a front view of the vehicle seat base.

FIG. 4 is a left side view of the vehicle seat base.

FIG. 5 is a rear view of the vehicle seat base.

FIG. 6 is a right side view of the vehicle seat base.

FIG. 7 is a top view of the vehicle seat base; and,

FIG. 8 is a bottom view of the vehicle seat base.

The dotted line portions of the drawing represent environmental structure only and do not form part of the claimed design. 

The ornamental design for a vehicle seat base, substantially as shown and described. 